Thread: 303 loads

Any of the .303 actions (other than the P14) aren't very gas-tight so you'd be stupid to be running hot loads. The rear locking isn't strongest action in the world and full-house loads usually involve a fair bit of brass movement on FL sizing. My suggestion is to stick with moderate loads and discard the brass after three reloads. Haven't loaded any for a few years but I notched the rim with a triangular file before each reload so I could keep count.